Volume effect upon martensitic transformation in Ti29.7Ni50.3Hf20 high temperature shape memory alloyстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 9 декабря 2020 г.
Аннотация:Thermoelastic martensitic transformation of Ti 29.7 Ni 50.3 Hf 20 alloy was studied by high-resolution and in situ real-time neutron diffraction in the temperature range from 25 °C to 250 °C upon heating and cool- ing. It was shown that B19 martensite phase is characterized by strong anisotropy of thermal expansion, lattice parameters of a B19 and b B19 increase while c B19 and βangle decrease with increasing of temper- ature. Coefficients of thermal expansion for martensite and austenite were determined. The volume effect of transformation in Ti 29.7 Ni 50.3 Hf 20 alloy is 0.75% which is six times larger than that of binary TiNi alloy.